Compare given date with today

Question

I have following   var    2010-01-21 00 00 00 0    I d like to compare this date against today s date  i e  I d like to know if this  var is  before today or equals today or not   What function would I need to use

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toBeComparedDate    2014-08-12    today    new DateTime   - gt format  Y-m-d      use format whatever you are using  expiry    new DateTime  toBeComparedDate  - gt format  Y-m-d     var dump strtotime  today   gt  strtotime  expiry      false or true

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You can use the DateTime class    past     new DateTime  2010-01-01 00 00 00     now      new DateTime     future   new DateTime  2021-01-01 00 00 00      Comparison operators work    var dump  past    lt   now              bool true  var dump  future  lt   now              bool false   var dump  now     past               bool false  var dump  now    new DateTime        bool true  var dump  now     future             bool false   var dump  past    gt   now              bool false  var dump  future  gt   now              bool true    It is also possible to grab the timestamp values from DateTime objects and compare them   var dump  past  - gt getTimestamp                               int 1262286000  var dump  now   - gt getTimestamp                               int 1431686228  var dump  future- gt getTimestamp                               int 1577818800  var dump  past  - gt getTimestamp    lt   now- gt getTimestamp        bool true  var dump  future- gt getTimestamp    gt   now- gt getTimestamp        bool true      Note that     returns false when comparing two different DateTime objects even when they represent the same date

User · Answer

That format is perfectly appropriate for a standard string comparison e g   if   date1  gt   date2       Action     To get today s date in that format  simply use  date  Y-m-d H i s     So    today   date  Y-m-d H i s     date    2010-01-21 00 00 00    if   date  lt   today       That s the beauty of that format  it orders nicely  Of course  that may be less efficient  depending on your exact circumstances  but it might also be a whole lot more convenient and lead to more maintainable code - we d need to know more to truly make that judgement call   For the correct timezone  you can use  for example   date default timezone set  America New York      Click here to refer to the available PHP Timezones

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Compare date time objects     I picked 10 days - Anything older than 10 days is  OLD   else  NEW     now     new DateTime     diff date diff  yourdate  now    diff days    diff- gt format   a    if  diff days  gt  10       echo  OLD       yourdate- gt format  m d Y     else      echo  NEW       yourdate- gt format  m d Y

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One caution based on my experience  if your purpose only involves date then be careful to include the timestamp  For example  say today is  2016-11-09   Comparison involving timestamp will nullify the logic here  Example       input  var    2016-11-09 00 00 00 0        check if date is today or in the future if   time    lt   strtotime  var               This seems right  but if it s ONLY date you are after         then the code might treat  var as past depending on         the time      The code above seems right  but if it s ONLY the date you want to compare  then  the above code is not the right logic  Why  Because  time   and strtotime   will provide include timestamp  That is  even though both dates fall on the same day  but difference in time will matter  Consider the example below       plain date string  input    2016-11-09     Because the input is plain date string  using strtotime   on  input will assume that it s the midnight of 2016-11-09  So  running time   anytime after midnight will always treat  input as past  even though they are on the same day   To fix this  you can simply code  like this   if  date  Y-m-d    lt    input        echo  Input date is equal to or greater than today

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strtotime  var     Turns it into a time value  time   - strtotime  var     Gives you the seconds since  var  if  time  - 60 60 24    lt  strtotime  var     Will check if  var has been within the last day

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Here you go   function isToday  time     midnight second       return  strtotime  time      strtotime  today        isToday  2010-01-22 00 00 00 0       true     Also  some more helper functions   function isPast  time        return  strtotime  time   lt  time        function isFuture  time        return  strtotime  time   gt  time

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Expanding on Josua s answer from w3schools     create objects for the dates to compare  date1 date create  someDate    date2 date create date  Y-m-d      diff date diff  date1  date2     now convert the  diff object to type integer  intDiff    diff- gt format   R a     intDiff   intval  intDiff     now compare the two dates if   intDiff  gt  0    echo   date1 is in the past    else  echo  date1 is today or in the future      I hope this helps   My first post on stackoverflow

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To complete BoBby Jack  the use of DateTime OBject  if you have php 5 2 2     if new DateTime    gt  new DateTime  var            var is before today so use it

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Few years later  I second Bobby Jack s observation that last 24 hrs is not today    And I am surprised that the answer was so much upvoted     To compare if a certain date is less  equal or greater than another  first you need to turn them  down  to beginning of the day  In other words  make sure that you re talking about same 00 00 00 time in both dates  This can be simply and elegantly done as   strtotime  today    lt   gt  strtotime  var    if  var has the time part on 00 00 00 like the OP specified   Replace  lt   gt  with whatever you need  or keep it like this in php 7   Also  obviously  we re talking about same timezone for both   For list of supported TimeZones

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date1 date create  2014-07-02     date2 date create  2013-12-12     diff date diff  date1  date2      the w3schools example  it works perfect

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Some given answers don t have in consideration the current day  Here it is my proposal   var    quot 2010-01-21 00 00 00 0 quot   given date   new  DateTime  var    if   given date    new  DateTime  today          today    if   given date  lt  new  DateTime  today          past    if   given date  gt  new  DateTime  today          future

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If you do things with time and dates Carbon is you best friend   Install the package then    theDay   Carbon  make  2010-01-21 00 00 00 0      theDay- gt isToday     theDay- gt isPast     theDay- gt isFuture    if  theDay- gt lt Carbon  today        theDay- gt gt Carbon  today       lt   less than  gt   greater than  As in the question    theDay- gt gt Carbon  today      true   false    and much more

[php] Compare given date with today

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